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The circumference is
c = 2*Pi*r
So r = c/(2*Pi)
The volume of a sphere is
v =(4/3)Pi*r3 = (4/3)Pi*(c/(2*Pi))3 = (4/(3*23))(Pi/Pi3)c3
= c3/(6*Pi2) ≈ c3/59.217624, where c is the circumference
If you're interested in a cylinder or some other shape, this formula will do you no good.
c = 2*Pi*r
So r = c/(2*Pi)
The volume of a sphere is
v =(4/3)Pi*r3 = (4/3)Pi*(c/(2*Pi))3 = (4/(3*23))(Pi/Pi3)c3
= c3/(6*Pi2) ≈ c3/59.217624, where c is the circumference
If you're interested in a cylinder or some other shape, this formula will do you no good.
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Circles are special. The ratio of the diameter to the circumference is the same for all circles. The ratio is a special number called pi and is approximately 3.14.
Use pi to calculate the radius.
Use the formula for the volume of a sphere, V = 4 X pi X r3 ÷ 3
Use pi to calculate the radius.
Use the formula for the volume of a sphere, V = 4 X pi X r3 ÷ 3
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